The famous Cauchy rigidity theorem [1]}, [2]}, [3]}, [4]}
can be formulated as follows: if the developments of two convex polyhedra in \(\mathbb {R}^3\)  are isometric,
then the polyhedra are congruent.
Thus, this theorem allows us to answer the question “are these convex polyhedra congruent?”, operating
only with the developments of these polyhedra.
It seems natural to us to pose the following problem: “is it possible to understand that these
convex polyhedra are (or are not) affine-equivalent if we are given only developments of these polyhedra?”
